I have two feeders one of sunflower seed hearts and the other with nyger seed, both are hanging on a feeding pole with a couple of trays underneath for water etc, we have lots of goldfinches and other finches even the occasional visit from siskins, they tend to eat from both feeders, but the other day a wood pigeon had perched on one of the trays within reach of the nyger seed and was helping himself to the nyger seed - he usually picks up the stuff on the ground but I'd never seen him trying to eat from the feeders. He seems to be very enterprising